package com.example.vsftpd.util;

import org.apache.commons.io.IOUtils;

import java.io.*;

/**
 * 用于处理Runtime.getRuntime().exec产生的错误流及输出流
 * @since 2020-12-21
 *
 */
public class StreamGobbler extends Thread {
	InputStream is;
	String type;
	OutputStream os;
	    
	StreamGobbler(InputStream is, String type) {
		this(is, type, null);
	}

    StreamGobbler(InputStream is, String type, OutputStream redirect) {
        this.is = is;
        this.type = type;
        this.os = redirect;
    }
    
    public void run() {

        InputStreamReader isr = null;
        BufferedReader br = null;
        PrintWriter pw = null;
        try {
            if (os != null)
                pw = new PrintWriter(os);
            isr = new InputStreamReader(is);
            br = new BufferedReader(isr);
            String line=null;
            while ( (line = br.readLine()) != null) {
                if (pw != null)
                    pw.println(line);
                System.out.println(type + ">" + line);
            }
            
            if (pw != null)
                pw.flush();
        } catch (IOException ioe) {
            ioe.printStackTrace();  
        } finally{
            IOUtils.closeQuietly(pw);
            IOUtils.closeQuietly(br);
            IOUtils.closeQuietly(isr);
        }
    }
} 